Double Star Calculator - Orbit

Orbital Elements for BU1266AB
WDS: BU1266AB WDS ID/Discoverer
P: 48.400 Orbital period (years)
a: 0.189 Semi-major axis (arcseconds)
i: 142.0 Inclination (degrees)
Ω: 249.0 Longitude of ascending node (degrees)
T: 1910.000 Epoch of periastron passage (year)
e: 0.43 Eccentricity
ω: 335.0 Longitude of periastron (degrees)
Start-Year: 2000.8 Year
End-Year: 2049.2 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for BU1266AB
Position: 233026.29+304954.6 Epoch-2000 right ascension and declination
WDS-ID: 23304+3050 WDS designation
Discoverer Code: BU1266AB Discover designation and components
ADS number: 16800 Aitken Double Star catalog
HD number: 221264 HD catalog number
Hipparcos number: 116017 Hipparcos catalog number
V1: 8.35 Magnitude of the primary
V2: 8.14 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1996 Date of last observation
Orbit grade: 2 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Msn1998c Reference

Double Star Orbit for BU1266AB



WDS 6th Orbit including measures of BU1266AB

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of BU1266AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.242   102.50
--------------------------
2000.80    0.132    13.13
2000.90    0.131    12.04
2001.00    0.130    10.92
2001.10    0.128     9.78
2001.20    0.127     8.62
2001.30    0.125     7.42
2001.40    0.124     6.20
2001.50    0.122     4.96
2001.60    0.121     3.68
2001.70    0.120     2.37
2001.80    0.118     1.04
2001.90    0.117   359.67
2002.00    0.116   358.27
2002.10    0.114   356.85
2002.20    0.113   355.39
2002.30    0.112   353.90
2002.40    0.111   352.37
2002.50    0.110   350.82
2002.60    0.109   349.23
2002.70    0.107   347.61
2002.80    0.106   345.96
2002.90    0.105   344.27
2003.00    0.105   342.56
2003.10    0.104   340.81
2003.20    0.103   339.04
2003.30    0.102   337.23
2003.40    0.101   335.40
2003.50    0.100   333.54
2003.60    0.100   331.65
2003.70    0.099   329.74
2003.80    0.099   327.81
2003.90    0.098   325.86
2004.00    0.098   323.89
2004.10    0.097   321.90
2004.20    0.097   319.89
2004.30    0.097   317.88
2004.40    0.096   315.85
2004.50    0.096   313.82
2004.60    0.096   311.78
2004.70    0.096   309.74
2004.80    0.096   307.69
2004.90    0.096   305.65
2005.00    0.096   303.61
2005.10    0.096   301.58
2005.20    0.097   299.55
2005.30    0.097   297.53
2005.40    0.097   295.52
2005.50    0.098   293.53
2005.60    0.098   291.55
2005.70    0.098   289.58
2005.80    0.099   287.63
2005.90    0.099   285.70
2006.00    0.100   283.79
2006.10    0.100   281.89
2006.20    0.101   280.02
2006.30    0.101   278.16
2006.40    0.102   276.32
2006.50    0.102   274.51
2006.60    0.103   272.71
2006.70    0.103   270.93
2006.80    0.104   269.18
2006.90    0.105   267.44
2007.00    0.105   265.72
2007.10    0.106   264.02
2007.20    0.106   262.34
2007.30    0.107   260.68
2007.40    0.107   259.03
2007.50    0.108   257.41
2007.60    0.109   255.80
2007.70    0.109   254.20
2007.80    0.110   252.62
2007.90    0.110   251.06
2008.00    0.111   249.51
2008.10    0.111   247.97
2008.20    0.112   246.45
2008.30    0.112   244.94
2008.40    0.113   243.44
2008.50    0.113   241.96
2008.60    0.113   240.48
2008.70    0.114   239.02
2008.80    0.114   237.57
2008.90    0.115   236.12
2009.00    0.115   234.69
2009.10    0.115   233.27
2009.20    0.116   231.85
2009.30    0.116   230.45
2009.40    0.116   229.05
2009.50    0.117   227.66
2009.60    0.117   226.28
2009.70    0.117   224.91
2009.80    0.118   223.54
2009.90    0.118   222.18
2010.00    0.118   220.83
2010.10    0.119   219.49
2010.20    0.119   218.15
2010.30    0.119   216.82
2010.40    0.120   215.50
2010.50    0.120   214.19
2010.60    0.120   212.88
2010.70    0.121   211.58
2010.80    0.121   210.28
2010.90    0.121   209.00
2011.00    0.122   207.72
2011.10    0.122   206.44
2011.20    0.122   205.18
2011.30    0.123   203.92
2011.40    0.123   202.67
2011.50    0.124   201.43
2011.60    0.124   200.19
2011.70    0.124   198.97
2011.80    0.125   197.75
2011.90    0.125   196.54
2012.00    0.126   195.33
2012.10    0.126   194.14
2012.20    0.126   192.95
2012.30    0.127   191.78
2012.40    0.127   190.61
2012.50    0.128   189.45
2012.60    0.128   188.30
2012.70    0.129   187.16
2012.80    0.129   186.02
2012.90    0.130   184.90
2013.00    0.131   183.79
2013.10    0.131   182.68
2013.20    0.132   181.59
2013.30    0.132   180.50
2013.40    0.133   179.43
2013.50    0.134   178.36
2013.60    0.134   177.31
2013.70    0.135   176.26
2013.80    0.135   175.22
2013.90    0.136   174.20
2014.00    0.137   173.18
2014.10    0.137   172.18
2014.20    0.138   171.18
2014.30    0.139   170.20
2014.40    0.140   169.22
2014.50    0.140   168.26
2014.60    0.141   167.30
2014.70    0.142   166.36
2014.80    0.143   165.42
2014.90    0.143   164.50
2015.00    0.144   163.58
2015.10    0.145   162.68
2015.20    0.146   161.78
2015.30    0.147   160.90
2015.40    0.147   160.02
2015.50    0.148   159.16
2015.60    0.149   158.30
2015.70    0.150   157.46
2015.80    0.151   156.62
2015.90    0.152   155.79
2016.00    0.152   154.97
2016.10    0.153   154.17
2016.20    0.154   153.37
2016.30    0.155   152.58
2016.40    0.156   151.79
2016.50    0.157   151.02
2016.60    0.158   150.26
2016.70    0.159   149.50
2016.80    0.160   148.76
2016.90    0.161   148.02
2017.00    0.161   147.29
2017.10    0.162   146.57
2017.20    0.163   145.86
2017.30    0.164   145.15
2017.40    0.165   144.46
2017.50    0.166   143.77
2017.60    0.167   143.09
2017.70    0.168   142.41
2017.80    0.169   141.75
2017.90    0.170   141.09
2018.00    0.171   140.44
2018.10    0.172   139.79
2018.20    0.173   139.15
2018.30    0.174   138.52
2018.40    0.175   137.90
2018.50    0.176   137.29
2018.60    0.177   136.68
2018.70    0.178   136.07
2018.80    0.178   135.48
2018.90    0.179   134.89
2019.00    0.180   134.30
2019.10    0.181   133.72
2019.20    0.182   133.15
2019.30    0.183   132.59
2019.40    0.184   132.03
2019.50    0.185   131.47
2019.60    0.186   130.92
2019.70    0.187   130.38
2019.80    0.188   129.84
2019.90    0.189   129.31
2020.00    0.190   128.79
2020.10    0.191   128.26
2020.20    0.192   127.75
2020.30    0.193   127.24
2020.40    0.194   126.73
2020.50    0.195   126.23
2020.60    0.196   125.73
2020.70    0.196   125.24
2020.80    0.197   124.75
2020.90    0.198   124.27
2021.00    0.199   123.79
2021.10    0.200   123.32
2021.20    0.201   122.85
2021.30    0.202   122.38
2021.40    0.203   121.92
2021.50    0.204   121.46
2021.60    0.205   121.01
2021.70    0.206   120.56
2021.80    0.206   120.11
2021.90    0.207   119.67
2022.00    0.208   119.24
2022.10    0.209   118.80
2022.20    0.210   118.37
2022.30    0.211   117.94
2022.40    0.212   117.52
2022.50    0.213   117.10
2022.60    0.213   116.68
2022.70    0.214   116.27
2022.80    0.215   115.86
2022.90    0.216   115.45
2023.00    0.217   115.05
2023.10    0.218   114.65
2023.20    0.218   114.25
2023.30    0.219   113.85
2023.40    0.220   113.46
2023.50    0.221   113.07
2023.60    0.222   112.69
2023.70    0.222   112.30
2023.80    0.223   111.92
2023.90    0.224   111.54
2024.00    0.225   111.17
2024.10    0.225   110.80
2024.20    0.226   110.42
2024.30    0.227   110.06
2024.40    0.228   109.69
2024.50    0.228   109.33
2024.60    0.229   108.97
2024.70    0.230   108.61
2024.80    0.231   108.25
2024.90    0.231   107.90
2025.00    0.232   107.55
2025.10    0.233   107.20
2025.20    0.234   106.85
2025.30    0.234   106.50
2025.40    0.235   106.16
2025.50    0.236   105.82
2025.60    0.236   105.48
2025.70    0.237   105.14
2025.80    0.238   104.80
2025.90    0.238   104.47
2026.00    0.239   104.14
2026.10    0.239   103.81
2026.20    0.240   103.48
2026.30    0.241   103.15
2026.40    0.241   102.83
2026.50    0.242   102.50
2026.60    0.243   102.18
2026.70    0.243   101.86
2026.80    0.244   101.54
2026.90    0.244   101.22
2027.00    0.245   100.91
2027.10    0.245   100.59
2027.20    0.246   100.28
2027.30    0.247    99.97
2027.40    0.247    99.66
2027.50    0.248    99.35
2027.60    0.248    99.04
2027.70    0.249    98.73
2027.80    0.249    98.43
2027.90    0.250    98.12
2028.00    0.250    97.82
2028.10    0.251    97.52
2028.20    0.251    97.22
2028.30    0.252    96.92
2028.40    0.252    96.62
2028.50    0.252    96.32
2028.60    0.253    96.03
2028.70    0.253    95.73
2028.80    0.254    95.44
2028.90    0.254    95.15
2029.00    0.255    94.85
2029.10    0.255    94.56
2029.20    0.255    94.27
2029.30    0.256    93.98
2029.40    0.256    93.69
2029.50    0.256    93.41
2029.60    0.257    93.12
2029.70    0.257    92.83
2029.80    0.258    92.55
2029.90    0.258    92.26
2030.00    0.258    91.98
2030.10    0.259    91.70
2030.20    0.259    91.41
2030.30    0.259    91.13
2030.40    0.259    90.85
2030.50    0.260    90.57
2030.60    0.260    90.29
2030.70    0.260    90.01
2030.80    0.260    89.73
2030.90    0.261    89.45
2031.00    0.261    89.18
2031.10    0.261    88.90
2031.20    0.261    88.62
2031.30    0.262    88.35
2031.40    0.262    88.07
2031.50    0.262    87.79
2031.60    0.262    87.52
2031.70    0.262    87.24
2031.80    0.263    86.97
2031.90    0.263    86.70
2032.00    0.263    86.42
2032.10    0.263    86.15
2032.20    0.263    85.88
2032.30    0.263    85.60
2032.40    0.263    85.33
2032.50    0.263    85.06
2032.60    0.264    84.78
2032.70    0.264    84.51
2032.80    0.264    84.24
2032.90    0.264    83.97
2033.00    0.264    83.70
2033.10    0.264    83.43
2033.20    0.264    83.15
2033.30    0.264    82.88
2033.40    0.264    82.61
2033.50    0.264    82.34
2033.60    0.264    82.07
2033.70    0.264    81.80
2033.80    0.264    81.53
2033.90    0.264    81.25
2034.00    0.264    80.98
2034.10    0.264    80.71
2034.20    0.264    80.44
2034.30    0.264    80.17
2034.40    0.264    79.90
2034.50    0.263    79.62
2034.60    0.263    79.35
2034.70    0.263    79.08
2034.80    0.263    78.80
2034.90    0.263    78.53
2035.00    0.263    78.26
2035.10    0.263    77.98
2035.20    0.263    77.71
2035.30    0.262    77.44
2035.40    0.262    77.16
2035.50    0.262    76.89
2035.60    0.262    76.61
2035.70    0.262    76.33
2035.80    0.261    76.06
2035.90    0.261    75.78
2036.00    0.261    75.50
2036.10    0.261    75.22
2036.20    0.260    74.95
2036.30    0.260    74.67
2036.40    0.260    74.39
2036.50    0.259    74.11
2036.60    0.259    73.83
2036.70    0.259    73.54
2036.80    0.259    73.26
2036.90    0.258    72.98
2037.00    0.258    72.69
2037.10    0.257    72.41
2037.20    0.257    72.12
2037.30    0.257    71.84
2037.40    0.256    71.55
2037.50    0.256    71.26
2037.60    0.256    70.97
2037.70    0.255    70.68
2037.80    0.255    70.39
2037.90    0.254    70.10
2038.00    0.254    69.81
2038.10    0.253    69.51
2038.20    0.253    69.22
2038.30    0.252    68.92
2038.40    0.252    68.62
2038.50    0.251    68.32
2038.60    0.251    68.02
2038.70    0.250    67.72
2038.80    0.250    67.42
2038.90    0.249    67.12
2039.00    0.249    66.81
2039.10    0.248    66.51
2039.20    0.247    66.20
2039.30    0.247    65.89
2039.40    0.246    65.58
2039.50    0.246    65.26
2039.60    0.245    64.95
2039.70    0.244    64.63
2039.80    0.244    64.32
2039.90    0.243    64.00
2040.00    0.242    63.67
2040.10    0.242    63.35
2040.20    0.241    63.03
2040.30    0.240    62.70
2040.40    0.239    62.37
2040.50    0.239    62.04
2040.60    0.238    61.71
2040.70    0.237    61.37
2040.80    0.236    61.03
2040.90    0.236    60.69
2041.00    0.235    60.35
2041.10    0.234    60.01
2041.20    0.233    59.66
2041.30    0.232    59.31
2041.40    0.231    58.96
2041.50    0.231    58.61
2041.60    0.230    58.25
2041.70    0.229    57.89
2041.80    0.228    57.53
2041.90    0.227    57.16
2042.00    0.226    56.79
2042.10    0.225    56.42
2042.20    0.224    56.05
2042.30    0.223    55.67
2042.40    0.222    55.29
2042.50    0.221    54.91
2042.60    0.220    54.52
2042.70    0.219    54.13
2042.80    0.218    53.73
2042.90    0.217    53.33
2043.00    0.216    52.93
2043.10    0.215    52.52
2043.20    0.214    52.11
2043.30    0.213    51.70
2043.40    0.212    51.28
2043.50    0.211    50.86
2043.60    0.210    50.43
2043.70    0.209    50.00
2043.80    0.207    49.56
2043.90    0.206    49.12
2044.00    0.205    48.67
2044.10    0.204    48.22
2044.20    0.203    47.77
2044.30    0.202    47.30
2044.40    0.200    46.84
2044.50    0.199    46.36
2044.60    0.198    45.88
2044.70    0.197    45.40
2044.80    0.195    44.91
2044.90    0.194    44.41
2045.00    0.193    43.90
2045.10    0.192    43.39
2045.20    0.190    42.88
2045.30    0.189    42.35
2045.40    0.188    41.82
2045.50    0.186    41.28
2045.60    0.185    40.73
2045.70    0.184    40.17
2045.80    0.182    39.61
2045.90    0.181    39.04
2046.00    0.180    38.46
2046.10    0.178    37.87
2046.20    0.177    37.27
2046.30    0.175    36.66
2046.40    0.174    36.04
2046.50    0.173    35.41
2046.60    0.171    34.77
2046.70    0.170    34.12
2046.80    0.168    33.46
2046.90    0.167    32.79
2047.00    0.165    32.10
2047.10    0.164    31.40
2047.20    0.162    30.69
2047.30    0.161    29.97
2047.40    0.159    29.24
2047.50    0.158    28.49
2047.60    0.157    27.72
2047.70    0.155    26.94
2047.80    0.154    26.15
2047.90    0.152    25.34
2048.00    0.150    24.51
2048.10    0.149    23.67
2048.20    0.147    22.81
2048.30    0.146    21.93
2048.40    0.144    21.03
2048.50    0.143    20.12
2048.60    0.141    19.18
2048.70    0.140    18.23
2048.80    0.138    17.25
2048.90    0.137    16.25
2049.00    0.135    15.23
2049.10    0.134    14.19






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This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.


Acknowledgements
The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 18:51:15



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